Floor treating machine



May-Z4, 1932. l.. J. BEDARD FLOOR TREATING MACHINE v2 sheets-sheet 1 Z5 I 25 Invevr jm alsowwegs May 24, 193,2- L.. J. BEDAl-"QD` I 1,860,168

FLOOR TREATING MACHINE Filed Nov. 7. 19.28 2 `sheets-sheet 2 lI "Il Mv lI'z 55 Il 42 h1 hh lll 45 UH El I @ky-2 :a: i IH llll l 4' u1 26a Z6 /6 z y 59 -ll 1 6M i V m 1H g//`\\ 54 57 7 l A M 50 v zy /L-/ z5 l zg y wyfgx/ zw "Y l f H -f w Invezvr I 42 j K I l l ,4 2&6 @m05 4l5* HiT/owne s UNET Cil

Patented May 24,' 1932Y LUDGER Banaan, 0F livnavnnaPoms, MrnNEsoTAf VFLOOR TREATING ivrncrmvnA Application mea November 7, 1928. yserial Nq.- aimes..

This inventionrelates to surface treating machines and especially to portable machines for treating floors.

It is anobject of myfinvention to provide a simple, compact, portable, surface treat-4 ing machine of high etciency which may be utilized to scrub, wax, polish or'sand a Hoor. l A

-Another object Yis to provide asurface treating -machine having at least a pair of rotary treating elements driven in opposite directions and having anoverlapping relation, whereby a relatively `large area may be treated by one application'of the machine without leaving streaks between the areas covered by the two treating elements.l

A further object is to provide a compact,

scrubbing `machine having oppositely r0tat Y ing elements of the type above described and means whereby Awashing material may be dispensed just forwardly of the scrubbing elements and in valin'ement with. the Voverlap ot said elements, the supply of said washing material being conveniently controlledV from a point adjacent the handle of themachine. i' "v e Another object is toprovidein a machine of the class described,v rotary surface treating elements which may be quickly and easi-` ly detached from their driving shafts to subf stitute rotary elements of Ya different typeV and which'elem'ents are moreover mounted for limited rocking movement on hor1zontal axes permitting them to conform to irregular contours on the" surface of -floors to be treated. v i i .l

Further objects are to provide in said ma-4 chine, a movable tank fonsupplying the washing material, said tank beingprovided with a trigger action-valve convenientlycon-Y trollable and a 'combined` splash Vskirt and bumper surrounding the :frame of the machine and Vpreventing the washingmaterial from beingthrown outwardly.

These and other objects and advantages .treating elements, aswell as thecons'truction ot the invention willbe apparent from the vvfollowing `description made in connection which Q Fig. 1` is a front elevation of a'preferredl embodiment of the invention lwith the handle and tank disposed in uprightunobstructing position. w 'Y -55 Fig.- '2 isa side'elevationofthe same, the dotted lines indicating the position of the handle and tank when the machine is in 0peration; u v

Fig. 3 is across section taken on the line 60 3 3 of Fig.` l, showing the top of the frame casing and the motor case in plan; r Fig. 4 is abottomplan viewl of the ma-V chinerthe dotted lines indicating a moved position of the two'treating'relements; 65

`Fig.5 isa horizontal`crosssection taken on the line '5-'5 of Fig. l,` and showing the driving mechanismtor the two brushes or of the frameandtruck; i

Fig. 6'is a'vertical sectiontaken on the line 6 6 of Fig. 2;l n Y Fig. 7 is a horizontal cross section, taken n on'the line 7 7' ollig, showing the-man--- ner in which Vthe treating elements are mount- 75 ed on their respective drivingshafts and con? nected therewith; forV limitedmocking moveAA` menton horizontal axes; and U Fig. v8 is a vertical section takenonthel line 8-8 `of Fig. 6,v showing the driving con -80 nection'betwee'n the-motor andthe treating elements andfalso Ashowing the structure and arrangement of the conduit for*dispensingv f thewashingmaterial. i l The 'preferred embodiment of -the-inveny tion7 Vas illustrated, .comprisesasubstantially elliptical plate' 1 0 constituting the-'frame for'. f Y the working parts ofthe device,aq'ol'atelOhav#Y ingan upstanding peripheral llangeflOaand Y Y a depending peripheral flange 106.." "Plate 10.. 90"

j 2pm.

is'disposed in horizontal position and has integrally Jforined therewith or rigidly'eonneeted theretoa rear tongue 11 Whichniay beprovidedwith a` pair of depending ears 12, said ears securing an axle 13 on Which a'pair ,of

suppoitiiig Wheels 14 arepivotally mounted. 'An elongated spider' 15 'straddles plat-e k10 longitudinelly,v l'ieing,- suitably secured to the en'ds of saidplate and havingitsbody spaced seine distance thereabove. Between spider i 1 15 and plate 10 a pair 'of relatively large ineshed gears 16 and 17 shown of the helical "type are.niounted,rsaid gears being fixed to short vertical shafts 18, Which are journaled y in suitable' ballbearing races 19 provided in Y 'plate 10. and spider 15 respectivelyf I pre- Vfer to eonstiuetgear 16 of ber or seine non-.1.

. in'etallie material, While the vgear v17 'inay be foe,

V"constructed of inetal.`V Theshaft's 18 extend throughvplate 10 and'fdepe'nd for vsome dis.y

taiiee below 'said plate and are adapted to be connected iivith 'a pair'ef treatin-'gelements,n "suoli as brushes, 'polisherser Sanders.g

j/Assuitable eleotrieinotor Mv 's Imounted on "A spider 'T15 with its armature shaft positioned n vertieallyand las shown with its base secured to the rearaiid .enlarged portioii'lzofjsaid 1 spiderfv"Thearinature shaft 2() 'of said niotoris positu)nedV slightly olf center` between the ends ot spider 15and carries at its lower end adiivingpinion Q1 in .mesh Withfthe blger 1.6- "The Filer end of motor f may be coveredbya suitable motorl cap 22 j preferably ,surrounding the motor case to Aprevent `dust and` other material Vfreni entering the saine.

A- suitable shell having areeessed portionto accommodate the motorV is 'teleseoped over thefupper flange 10uoithe fra-ine and'inay'be suitably,y `secured thereto andA a semi-annular collar 24;

f sur-roundsthe lower portion of the motor and the recessed. portion otgear casin T23, collar f 24 forming a tight litbetween the ase of the has'azlange which is seoured'to; the edgey of motor and thegeareasing tofeXcl-iide Water K 'fdispensingtube 25 horizontally through gear oasingand may be .Welded *15,* having a'.downivardly.'`curvedV Vforward 'Y discharge endterrninating justbeloW plate 10 l Y aiidadjaoent the Vforivard/ledge `of plate 10 apu p'roizirnately'niidwaybetween .the ends of said "if Yp--.a'te .and preferably.Constructed ofV inetal.4`

th -to ifeeeive netter' keys 186,*Y VAs 'Yillusf ech s rubbing brushes 26 ef ordinary type arejp'rovided-having central 'vertical bores to ear easing 2.3 the :forni otra' receive 'the shaftspand inetallreinforeing y plates' 26f'are `attached to the vtops of vsaid brushes in any suitable nianner.'

of oppositely disposed notches 26?) in which Plates 26a" have central basses, eaoh'provided With a pair Y e 'pins 18a on shafts 18 vare adapted'to lie,

thereby lf eyingthe brushestothe shafts. The Cotter keys 182i are, of course,disposedl below Vthe lower portion of the bodies of the brushes .retaining` the saineoii the shafts. It Will be "seen that the brushes may rock slightly being uleiuinedon the `pinsliand Will thu'sfautoinatioally.Contorni to irregular siii'faoes 'in a iloor to be treated.,`

Si. handle socket 2T is pivotedlto the tongue Zontal' pin 27a andto the upper end of said 'handleso'oket'aii 'elongated `straight tubulan handle 28 secured terminating in an angu larly .disposed hand .rg'rip 28a Whichina-y be asf construetedy ot, rubber or 'other .conipressible material.V V-Handle Vsocket 27-is provided at itsinterniediate portion. WithV a piveted're-- tainfi-nglinl; c)9 which when the handle'28 is' disposed Ain' veitiealposition will engageat its outer end a detent 30,. saidY ydetent being secured .to they rear edge of the spider 15. -Y When the detentV 30 is 4engaged by the link 29,'*t1ie Y handle will obviously beheld in erect5 ,non-

iobstrueting position. 'Handle 28 carries-anelongated tank 31 .of box-liker forni eXtending'fromatpoint just above handle 'socket 27 to'apointadjaeent lthe hand 4grip 28a.-; Tank 81 has a vlengitudin'ally extending .groove 311; which l.aeeonfinfio'dates thel handle and said tank is..reniovably'fseeured atfits 'upper'.end Y tosaid handle .fbyjinea'ns of a retainingstrap' v 3:2 pivotedat one end to said tanlQ*overlyingV said handle and having. engagement beneath a Wingfnut on the opposite sidevofsaid li-andlle. The lov/er end of'saidtank is-de-` taehably secured to the handle by means ofv vengageiiient between a pair of depending tank lugs 31a' and fahorizontal cross piece 341 atvtaehed to saidhan'dle just above the handle socket 27. Tank 31, if desired, may haie;a

'An outlet valve'is vprovidedi'vithin 'andy at theloiver end of'sa-idta'nk; ineludinglavshort Y valve tube36 having anA axialV bore therein,

saidtubedfepending -iroin said tank 'and having itsi lower end oonneetible"Withthe'outerk end ofldispensingtube 25h51'vsuit-ablenieans,`

such n as .by a shert piece olV rubber. hose- 37; The upper end of the valve tube 36is provid;

ed with an'interiial taperedI valve seat'and anelongated plunger 38 extending longitudi nallyr Within' tank 31 has aneedlejvalve 38a lat its low-erv endV adapted tofsnugly fit said Valves'eat.. Pluiiger is precisely guideidto itsseat bymeans'fof anreyegfforined inthe upper .end'of tank 31fanda 'guide39 adjacent the lower'endythereot. A' Asoiled Vspring l10nk is interposedbetween'v the top of tank 31; andV distance below the top of the tank, said spring yieldingly holding the needle'valve against its seat. The upper end of plunger 38 ex,-v

tends beyond the upper end ofthe tank to a `f position-adjacent the hand gripr 38a and may be provided with a trigger handle 380.

Y Av pair of spaced `oppositely extending cleats 41 are provided on the front portion of the handle 28 about which an elongated electric cord 42 containing the s-ervice wires-forV the motor may be coiled, as shownV in Fig. 2.V

A conventional electric plug 43 is connected to the free end of the cord 42 and the oppol' site end of said cord extends into the upper portion of tubular handle 28 through an eye 28?) and downwardly through said handle and through said handle socket 27 and is connected with the motor insuitable fashion. A suitable switch is disposed within tubular handle 28 adj acent the upper end thereof and has a switch lever S projecting externally of said handle and in convenient positiony to Y beeasily dispensed as desired byapplying an l AC0 be manipulated by an operator. Y

As illustrated, Van aperture 100 is formed through plate 10 and substantially alined with the driving pinion 21 of the motor. and an inspection plate 44 may be detachably secured to the bottom of plate 10 to cover said aperture. v

A combined splash skirt and bumper 45,

` constructed of some relatively soft material,v such as fabric, surrounds plate l0 and may be suitably secured to one of the flanges of said plate having its lower edge vspacedsomedistance above the floor but depending sufficient-` ly to prevent splashing of the washing material when the machine is in operation.V I

The rotary scrubbing brushes or other elements for treating the floor surface are of general oblong shape having parallel longi-y tudinal sides and semi-circular ends. Scrubbing brushes of this type may be Afound on the market. The shafts carrying fulcrum pins 18a are so'arranged that when the.

brushes or other elements are attached-there to, said elements will be spaced a slight dis-k tance apart throughout their rotation in opposite directions but the working areas of saidbrushes will overlap or merge. This will be apparent from an inspection of Figs-4 and 7, the dotted lines'in Fig. 7 indicating the position of th-e two brushes when moved ap'- tained at all times throughout their rotations proximately 45 from the position shown `in full lines. Shafts l8are spaced the proper distance apart to permit this overlapping relation of the brushes, thebrushes being maindue to the particular shape and arrangement thereof, a constant distance apart. In'actual practice, in the embodiment illustrated in the drawings, the distance between the brushes at all times throughout their `opposite rotation is constant andV approximately onefourth of an inch. It will thus be seen that the maximum cooperation is obtainedbe-l tweentwo brushes or other treating elements andfdue to their overlapnostreak's will be left upon the surface of the floor treated.'-

As illustrated,`th e machine isequippedfor scrubbing and after filling -the tank 31,' the handle 28 may-be lowered by releasing retaining jlinlg'29, the electrical connection! made withthe ordinary housholdsourcebfelec#V 1 tricityV4 andl the device maythen be pushed v over the floor to scrub the same. it .will be noticed that 'the -gr'eater'partvofthewveiglit y fromengagement with theioor, it` is only necessary to depress handle. 28 below thev` in# clined positionshown in'` dotted lines inFig. 2, the frame thenfulcrumingonfthe wheelsr14 to `lift the brushes;|` The truck maythen'be* i I easily m'oved over theffloor.

:The `'detergent or washing material may l upward pull upon"plunger 38 through the trigger handle 38'@ conveniently disposed adi `jacent thehandle grip 28a? 'It will be'inoticed forwardly Vof the overlap between the two brushes and consequentlyV washing finaterial Y will be distributed by the brushes andutilized to best advantagee The removable-brushz j i plates 26a reinforcethe'brushes,7preventing warping of the'A same and when the brushes become worn the; platesfmay be detached and i secured tothe tops ofnew -brushes.`-VV

`that the washing material'is dispensed-"just Itwill be noticed thatdue tothe Vcur-ved i t structure'ef dispensingtube' 25, the samelmay be easilycleaned if it becomes clogged'` by insertingaJ wire through the same.` `Like#A wise the valve stem 36 may be'easily cleaned.

f Ifit is desired toutilize Ethe"machinefor waxing, polishing or sanding,therappropriatertreating elements lof similar shape tothe brushes, illustrated inthe drawings, are prof' vided., Cotter ykeys 18h are withdrawn from the lower extremities of shafts18 andthev brushes 'are removed and the desiredlelem'ents are quickly.. installed, their notches 26?) being engaged with the fulcrum pins 18a.' Cotter pins-186 may'then bef-replaced. The tank` may bev removed for greater convenience'in waxingfpolishing orsanding by freleasing retaining strap 32 and 'the' engagement be# tween `depending tank lugs 31a w1ththecross pieceV 84 and then detaching the v rubber con? nectionY tube 37 from the'rear and `oi'i-terend ofnietal dispensing tube 25. 3 1 f Attention iscalled tofrny simple, compact structure fof frame, "spider and gears; "Gears l6and=l`8`are lconvenient'ly-rnounted between,

tliezjfr'ame plate'lOandthe spider l5., the

"stalledat--the upper "and lower endsofffeach' ,without the ,use lof set screws or othe'r'r retaining devices.y As illustrated.be'aring `'races 19 are snugly /titted into recessed bosses in the plateVv l0 and spider ll5 and this can loe vquickly andeasily attached or replacedg Y t Fromthe foregoing,descriptionfit will'be Y Y seem-that Izhave invented a highlyecient,

V"compact ,floor treating machinev having.v a

- v largeicapacityfor .werkend-adapted to elticiently treatY the Airregular surfaces or con-j toursof the floor'and t'ofurtherlworka coin- .parativelylarge Varea without'leaving streaksy y k"on'fthe treated Surface..` It will'gfurther he Cri Hoor f consequently in VVInaJn-nel'.'

seen that Ywhen used for scrubbing, washing 7' Y materialmayheeasily and conveniently dise pensed just. ahead .of the Voverlapiof the two rotary brushes andwill beapplied tothe ous changes' maybe made inthe -torm,det`a`ils, arrangement and" proportions ofthe parts withoutdeparting `from the scope of applicants invention. Y r l' The floor treating elements may rock on the fulcruin 18a and mayealso have arlateralV detachably securing the lower end of said 75' l Intestimonywhe'reof I;tiiixinysignature. 1

said tank, means for .Conveniently controlling said valve from adjacent the outer V4end of t said handle, one i surface of said', tankllaving a longitudinally extending groove therein, A

adapted to accommodate said handle, means adjacent they upper end Ofsaidtank ifor Voverrlying said handle to detachahly retainthe up-A v i per end ot'- said tank thereto, and ln ieans lfor tank to thev lower end of said handle.

VLUDGER J. BEDARD.

fsb

tliemost advantageous .l

tilting movement duev to the .engagement of.

pin 180i` With the confining notches ofthe boss; l

26,5 of: said'elements, this action 'increasing the Vahility of the-hrushesor other treatingv elements to conform to v-arationsingthe suri face to he treated. What is claimed is: Y 5

1; In' a machine for treating floors,V ahori- /zontal frame mounted on wheels for moving .across the Hoon, a shaft dependingfrom said Y trame and Vmounted, therein, means for `rotating said shaft, said shaft having a diametrically disposed fulcrumy pin atsome dis# tance *above the lower end thereof, a floor treating element having a vertical socket connected with its top, ,said ysocket being"` of greater internal .diameter thanthe external diameter of said shaft, the lowergendof said Y Shaft extendingv through said socket and Iloe-` ing provided with adetachable retaining-pin disposed in spaced relation below the underV I surfacexof the top of, saidjelementythe upper edge Yof said socket having "opposed slots Y thereinY for receiving'the ends of said'fulcrum .pin tofkey saidelement to lsaid shaft A* with freedom for limitedjrocking movementy f f onsaid pin and with lfreedomfforlimited, f i' connected with; saidta'nk and having afdepending discharge endadjacentlrsaid iioorV I l treating clement, ,la valvein; the-lower 'end of izo 

